Diket kesamaan (m/x+1)+(n/x-3)= 6x+2/x²-2x-3 hitunglah nilai m dan n
Matematika
hannautami2834
Pertanyaan
Diket kesamaan (m/x+1)+(n/x-3)= 6x+2/x²-2x-3 hitunglah nilai m dan n
1 Jawaban
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1. Jawaban hadi2saputro
[tex]\frac{m}{x+1} + \frac{n}{x-3} = \frac{6x+2}{x^2-2x-3} [/tex]
[tex]\frac{(x-3)m + (x+1)n}{(x+1)(x-3)} = \frac{6x+2}{x^2-2x-3} [/tex]
[tex]\frac{mx-3m+nx+n}{x^2-2x-3} = \frac{6x+2}{x^2-2x-3} [/tex]
[tex]\frac{mx+nx-3m+n}{x^2-2x-3} = \frac{6x+2}{x^2-2x-3} [/tex]
[tex]\frac{(m+n)x-3m+n}{x^2-2x-3} = \frac{6x+2}{x^2-2x-3} [/tex]
[tex](m+n)x-3m+n=6x+2[/tex]
[tex]m+n = 6[/tex]
[tex]-3m+n=2[/tex]
[tex]kita\ eliminasi[/tex]
[tex]m+n = 6[/tex]
[tex]-3m+n=2[/tex]
[tex]------\ \ -[/tex]
[tex]4m=4[/tex]
[tex]m=1[/tex]
[tex]lalu\ kita\ substitusi[/tex]
[tex]m+n=6[/tex]
[tex]1+n=6[/tex]
[tex]n=5[/tex]
[tex]jadi,\ nilai\ m=1\ n=5[/tex]
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